From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 16C2E1170E for ; Mon, 11 Sep 2023 14:08:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8BFD2C433CA; Mon, 11 Sep 2023 14:08:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1694441285; bh=+ASAzbvrs7oNoxT1Cia0s9iQMpvV8YWk6/1SagqLjlI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HM+GKSAwuCCJPQ2bsNB7hsW+XFUWz/cStzecalJBHCH5TY4GQ34v6sN8cnnpVZ4y3 04wkoxURvU4S+omXk+UewmnMZ3PmQIr+3oFcHOOPSTt9ERGAAm0MIlQIVY5YwXGy7a vht/+FjJNVKyvMswLqTWz6kTNtOfoOESdwp18dZo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Matthias Brugger , Alexandre Mergnat , Sui Jingfeng , CK Hu , AngeloGioacchino Del Regno , Chun-Kuang Hu , Sasha Levin Subject: [PATCH 6.5 342/739] drm/mediatek: Fix potential memory leak if vmap() fail Date: Mon, 11 Sep 2023 15:42:21 +0200 Message-ID: <20230911134700.661948827@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230911134650.921299741@linuxfoundation.org> References: <20230911134650.921299741@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.5-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sui Jingfeng [ Upstream commit 379091e0f6d179d1a084c65de90fa44583b14a70 ] Also return -ENOMEM if such a failure happens, the implement should take responsibility for the error handling. Fixes: 3df64d7b0a4f ("drm/mediatek: Implement gem prime vmap/vunmap function") Reviewed-by: Matthias Brugger Reviewed-by: Alexandre Mergnat Signed-off-by: Sui Jingfeng Reviewed-by: CK Hu Reviewed-by: AngeloGioacchino Del Regno Link: https://patchwork.kernel.org/project/dri-devel/patch/20230706134000.130098-1-suijingfeng@loongson.cn/ Signed-off-by: Chun-Kuang Hu Signed-off-by: Sasha Levin --- drivers/gpu/drm/mediatek/mtk_drm_gem.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.c b/drivers/gpu/drm/mediatek/mtk_drm_gem.c index a25b28d3ee902..9f364df52478d 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_gem.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.c @@ -247,7 +247,11 @@ int mtk_drm_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map) mtk_gem->kvaddr = vmap(mtk_gem->pages, npages, VM_MAP, pgprot_writecombine(PAGE_KERNEL)); - + if (!mtk_gem->kvaddr) { + kfree(sgt); + kfree(mtk_gem->pages); + return -ENOMEM; + } out: kfree(sgt); iosys_map_set_vaddr(map, mtk_gem->kvaddr); -- 2.40.1